Biotin and derivatives
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Medchemexpress LLC Bis-PEG13-NHS ester | 2221949-00-2 | MFCD21363287 | 98.0% | 884.92 | C38H64N2O21 | 10 MG
Bis-PEG13-NHS ester is a PEG/alkyl/ether-based bifunctional linker bearing NHS ester reactive groups for conjugation to primary amines. It is used as a cleavable linker for antibody-drug conjugates and as a linker in PROTAC synthesis to enable targeted bioconjugation and protein degradation.
- Contains two NHS ester reactive groups for conjugation to primary amines.
- Suitable as cleavable linker for antibody-drug conjugates and PROTAC synthesis.
- High purity, typically 98.0%.
- Molecular weight 884.92 and formula C38H64N2O21.
- Store sealed, away from moisture; in solvent: -80°C (6 months), -20°C (1 month).
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Medchemexpress LLC Bis-PEG7-NHS ester | 1334170-02-3 | 98.0% | 620.60 g/mol | C26H40N2O15 | 250 MG
Bis-PEG7-NHS ester is a bifunctional PEG-based linker bearing two N-hydroxysuccinimide (NHS) ester groups. It is used as a building block in the synthesis of antibody-drug conjugates (ADCs) and proteolysis targeting chimeras (PROTACs), offering a hydrophilic spacer and amine-reactive termini for conjugation chemistry.
- Contains two NHS ester functional groups for amine coupling.
- PEG7 spacer increases solubility in aqueous media.
- Suitable for ADC and PROTAC linker synthesis.
- Analytical purity: 98.0%.
- Molecular weight: 620.60 g/mol; molecular formula: C26H40N2O15.
- Store at -20°C; stable for extended storage under recommended conditions.
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Medchemexpress LLC BHQ-1 NHS | 916753-61-2 | C30H31N7O7 | 1 MG
BHQ-1 NHS is a fluorescent dye directly labeled by fluorescently labeled nucleotide, intended exclusively for research use.
- Directly labels by fluorescently labeled nucleotide
- High purity (96.65%)
- Appears as a solid, brown to black in color
- Stable in powder form for 3 years when stored at -20°C
- Can be stored in solvent at -80°C for 6 months
- Soluble in DMSO at 4.35 mg/mL (7.23 mM)
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